Just to add to that, i got a phone call from the tax dept here in NZ, they actual called me to prompt me to fill in a form because they thought i was entilted to a small refund of a couple of hundred dollars.
can i say that again the tax man rang me on my mobile and said, fill this form in i think we owe you money!
never happened in the UK, i was so pleased, and since they let me off with a small charge because i put a gst return in a week late, well i let them keep the refund, as i said nice people imagine the VAT man cutting you some slack!
Bob